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author | Quentin Colombet <qcolombet@apple.com> | 2014-03-27 00:52:16 +0000 |
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committer | Quentin Colombet <qcolombet@apple.com> | 2014-03-27 00:52:16 +0000 |
commit | 566abecc9f56726c14f3aa3b6e3699419b371d40 (patch) | |
tree | 6432c6d9dde07b05512b0a67fc27649ac71dc543 | |
parent | e459f72ee0e24a26c9625bc7485f050ef5753ddc (diff) | |
download | llvm-566abecc9f56726c14f3aa3b6e3699419b371d40.tar.gz llvm-566abecc9f56726c14f3aa3b6e3699419b371d40.tar.bz2 llvm-566abecc9f56726c14f3aa3b6e3699419b371d40.tar.xz |
[X86][Vectorizer Cost Model] Correct vectorization cost model for v2i64->v2f64
and v4i64->v4f64.
The new costs match what we did for SSE2 and reflect the reality of our codegen.
<rdar://problem/16381225>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204884 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r-- | lib/Target/X86/X86TargetTransformInfo.cpp | 2 | ||||
-rw-r--r-- | test/Transforms/LoopVectorize/X86/uint64_to_fp64-cost-model.ll | 26 |
2 files changed, 28 insertions, 0 deletions
diff --git a/lib/Target/X86/X86TargetTransformInfo.cpp b/lib/Target/X86/X86TargetTransformInfo.cpp index 10e4378054..2d44db0acd 100644 --- a/lib/Target/X86/X86TargetTransformInfo.cpp +++ b/lib/Target/X86/X86TargetTransformInfo.cpp @@ -512,6 +512,8 @@ unsigned X86TTI::getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src) const { { ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i8, 2 }, { ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i16, 2 }, { ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i32, 6 }, + { ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i64, 2*10 }, + { ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i64, 4*10 }, { ISD::FP_TO_SINT, MVT::v8i8, MVT::v8f32, 7 }, { ISD::FP_TO_SINT, MVT::v4i8, MVT::v4f32, 1 }, diff --git a/test/Transforms/LoopVectorize/X86/uint64_to_fp64-cost-model.ll b/test/Transforms/LoopVectorize/X86/uint64_to_fp64-cost-model.ll new file mode 100644 index 0000000000..86c32b2d2e --- /dev/null +++ b/test/Transforms/LoopVectorize/X86/uint64_to_fp64-cost-model.ll @@ -0,0 +1,26 @@ +; RUN: opt < %s -loop-vectorize -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx -S -debug-only=loop-vectorize 2>&1 | FileCheck %s +; REQUIRES: asserts + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" +target triple = "x86_64-apple-macosx10.8.0" + + +; CHECK: cost of 20 for VF 2 For instruction: %conv = uitofp i64 %tmp to double +; CHECK: cost of 40 for VF 4 For instruction: %conv = uitofp i64 %tmp to double +define void @uint64_to_double_cost(i64* noalias nocapture %a, double* noalias nocapture readonly %b) nounwind { +entry: + br label %for.body +for.body: + %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] + %arrayidx = getelementptr inbounds i64* %a, i64 %indvars.iv + %tmp = load i64* %arrayidx, align 4 + %conv = uitofp i64 %tmp to double + %arrayidx2 = getelementptr inbounds double* %b, i64 %indvars.iv + store double %conv, double* %arrayidx2, align 4 + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %exitcond = icmp eq i64 %indvars.iv.next, 256 + br i1 %exitcond, label %for.end, label %for.body + +for.end: + ret void +} |